JP7324201B2 - vehicle test equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle testing apparatus used for conducting simulated running tests and the like of test vehicles.

Conventionally, for example, as described in Patent Document 1 and Patent Document 2, for the wheels of the test vehicle, which is the test object placed on the roller, the air blower provided on the floor in front of the roller A vehicle test apparatus is known that includes a cooling device that blows air from a mouth onto the wheels.

JP 2016-001173 A Japanese Patent Application Laid-Open No. 2001-289741

In the vehicle testing apparatus as described above, not only the wheels are cooled, but also the brakes attached to the wheels, etc., from the air outlet provided on the floor in front of the test object, depending on the purpose of the test. Then, there is a demand to cool the place where the air cannot be applied directly. There is also a demand for improving the cooling efficiency more than before.

However, in the conventional vehicle testing apparatus, since the blower port of the cooling device is fixed to the floor surface in front of the roller, it is difficult to meet such a demand.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicle testing apparatus equipped with a cooling device capable of freely selecting a portion to be cooled according to the purpose of the test and improving the cooling efficiency more than conventionally. there is

That is, a vehicle testing apparatus according to the present invention is a vehicle testing apparatus for testing a vehicle or a test piece that is a part of the vehicle, and comprises a rotating body on which the test subject is mounted, and a rotor mounted on the rotating body. and a cooling device for blowing air from the side of the test piece toward at least a part of the test piece in order to cool the test piece.

According to such a vehicle testing apparatus, the wind can be blown from the side of the test object, so that the side of the tire, the wheel, the brake pad, the brake disc, etc., which could not be hit directly by the conventional wind. It can blow air directly.
Moreover, since the wind is blown from the lateral direction of the wheel into the wheel housing space for housing the wheel of the test piece, the air in the wheel housing space can be agitated.
The air in the wheel housing space has a larger contact area with the wheels than the air that is directly sent to the wheels. can be cooled.
In this specification, the running direction of the specimen is referred to as front and rear, and the sides or lateral sides are defined as the outer sides of the right and left sides of the specimen in the direction of movement of the specimen. More specifically, an imaginary straight line that passes through the outermost end in the axial direction of the rotating body (specifically, the outer peripheral surface on which the test piece is placed) and is perpendicular to the axis of the rotating body The outer side is defined as the lateral side.
In addition, the term "wheel" as used herein includes both wheels and tires.

The cooling device comprises an air blowing port for blowing air toward at least a part of the test piece from the side of the test piece, and an air direction adjusting section for adjusting the position or direction of the air blowing port. For example, it is possible to freely select the part of the specimen to be cooled and the wind direction according to the purpose of the test.
In addition, since the air can be sent targeting a specific portion to be cooled, the cooling efficiency of the cooling portion can be further improved.

If the wind direction adjusting section is configured to be movable along the side of the test piece in the longitudinal direction of the test piece, the degree of freedom of the cooling portion can be further improved.

A vehicle fixing portion is arranged on the side of the rotating body so as to extend in the front-rear direction of the test piece and is used to fix the test piece on the rotating body, and the airflow direction adjusting portion is arranged on the vehicle fixing portion. If it is fixed to the vehicle test apparatus, it is possible to use the vehicle fixing portion originally provided in the vehicle test apparatus, so that the configuration of the vehicle test apparatus can be simplified.

As a specific embodiment of the present invention, the wind direction adjusting section is fixed to the vehicle fixing section so that the position of the air outlet can be moved relative to the test object along the direction in which the vehicle fixing section extends. You can list what you do.

The wind direction adjusting unit may adjust the position or direction of the air blow port so as to blow air toward the wheel of the specimen or the wheel housing space that houses the wheel of the specimen.

If the airflow direction adjusting section allows the air blow port to rotate back and forth with respect to the specimen, the degree of freedom in airflow direction can be improved.

If the vehicle testing apparatus further includes an air volume control section for controlling the volume of air blown out from the air blow port, the wheels of the specimen can be appropriately cooled as needed.

Specifically, the air volume control unit may control the air volume based on the vehicle speed of the specimen, the rotational speed of the rotating body, or the temperature of the wheel.

In addition, when the deceleration of the vehicle speed of the test piece or the rotational speed of the rotating body is large, the temperature of the brake is likely to rise. The air volume may be controlled based on the deceleration of the vehicle speed of the specimen or the deceleration of the rotational speed of the rotating body.
Furthermore, the air volume control unit may control the air volume to increase when the deceleration is equal to or greater than a predetermined threshold.

According to the present invention, it is possible to freely select the parts to be cooled and the wind direction of the specimen according to the purpose of the test, and furthermore, it is possible to improve the cooling efficiency of each cooling part compared to the conventional art.

1 is an overall schematic diagram of a vehicle testing apparatus according to an embodiment of the present invention; FIG. 1 is an overall schematic diagram of a vehicle testing apparatus according to the present embodiment; FIG. FIG. 4 is a schematic diagram showing the structure of the wind direction adjusting unit according to the present embodiment. An example of the positional relationship between the cooling portion and the blower port according to the present embodiment. FIG. 10 is a modified example of the positional relationship between the cooling portion and the blower port according to the present embodiment; FIG. 4A and 4B are examples of changing the position and direction of the blower port according to the present embodiment; The control block diagram which concerns on this embodiment.

V...Test vehicle W...Wheel W4...Wheel accommodation space 100...Vehicle testing device 1...Dynamometer 11...Roller 42...Air blowing port 44...Airflow direction adjusting unit 45・・・Air volume control part

A vehicle testing apparatus 100 according to an embodiment of the present invention will be described below with reference to each drawing.
As shown in FIGS. 1 and 2, a chassis dynamometer device, which is a vehicle testing apparatus 100 according to the present embodiment, includes, for example, a chassis dynamometer 1 on which a test vehicle V, which is a test vehicle, is mounted. , a vehicle fixing section 2 for fixing the test vehicle V to the chassis dynamometer, and a dynamo control section 3 for controlling the chassis dynamometer 1 .

The chassis dynamometer 1 functions, for example, as a load device that applies a load to the test vehicle V in accordance with driving conditions such as mode driving and actual road driving.

Specifically, the chassis dynamometer 1 includes, for example, a roller 11 which is a rotating body on which a drive wheel such as a front wheel among the wheels W of the test vehicle V is mounted, and a power absorbing portion connected to the roller 11. and a large fan 12 arranged in front of the test vehicle V.
The rotating body is, for example, a cylindrical roller 11 configured to rotate in the longitudinal direction of the test vehicle V, an endless belt, or the like.

The vehicle fixing portion 2 includes, for example, a rail 21 extending in the longitudinal direction of the test vehicle V, a pole 22 attached movably along the rail 21, and a wire 23 connecting the pole 22 and the test vehicle V. etc.
The rails 21 are arranged on both sides of the test vehicle V so as to be parallel to the longitudinal direction of the test vehicle V, for example.

The dynamo control unit 3 is an information processing circuit including, for example, a CPU, a memory, an A/D converter, a D/A converter, and the like. It is configured to exhibit its function.

The dynamo control unit 3 torque-controls the power absorbing unit so as to achieve a predetermined target running resistance in a predetermined running mode.

Thus, the chassis dynamo device 100 according to the present embodiment further includes a cooling device 4 for cooling the driving wheels and non-driving wheels, which are the wheels W of the test vehicle V, or the brakes B and the like attached to these wheels W. It has

The cooling device 4 includes a fan 41 for generating wind, an air pipe 43 having one end connected to the fan 41 and having an air outlet 42 formed at the other end, and a position of the air outlet 42 with respect to the test vehicle V. A wind direction adjusting unit 44 for adjusting the direction of wind and an air volume control unit 45 for controlling the volume of the wind are provided.
The cooling devices 4 are provided in the same number as the wheels W of the test vehicle V mounted on the chassis dynamo device 100 .

The fan 41 is arranged inside the underground pit G of the chassis dynamo device 100, outside the rail 21, or the like.
The blower pipe 43 is a hose having flexibility that connects the fan 41 and the blower port 42 .

In this embodiment, the tip of the blower pipe 43 where the blower port 42 is formed is made of a nozzle-shaped member, and the wheel W is blown from the outside of the protective fence 24 provided outside the wheel. It is arranged on the side of the roller 11 and outside the protection fence 24 so that the wind can be sent to the side of the roller 11. The diameter of the blower port 42 is circular with a diameter of approximately 5 cm.

The wind direction adjusting portion 44 adjusts the position and direction of the air blowing port 42 by changing the position and direction of the end portion of the blowing pipe 43 attached to the wind direction adjusting portion 44 .
As shown in FIG. 3, the wind direction adjusting unit 44 includes a position adjusting mechanism 441 that adjusts the position of the front end of the test vehicle V in the front-rear direction, and a position adjustment mechanism 441 that adjusts the front-rear direction of the test vehicle V at the front end. and an orientation adjustment mechanism 442 .

In this embodiment, the position adjustment mechanism 441 includes a first position adjustment mechanism 441a capable of roughly moving the position of the tip and a second position adjustment mechanism 441a capable of finely adjusting the position of the tip. 441b.

The first position adjusting mechanism 441a is composed of a pair of rails 21 provided in the chassis dynamometer device 100 and a movable table a1 slidable along the rails 21. As shown in FIG.
The movable table a1 is fixed by a first fixing mechanism a2 such as a screw after being adjusted to a predetermined position. In each drawing, the movable table a1 is shown as a rectangular frame, but it is not limited to this.

The second position adjusting mechanism 441b includes a pair of rails b1 provided on the movable table a1 and a slide member b2 that can slide on the rails b1 of the movable table a1.
The slide member b2 is fixed by a second fixing mechanism b3 such as a screw after being adjusted to a predetermined position. In the drawing, the slide member b2 is a rectangular plate whose size in the longitudinal direction of the test vehicle V is smaller than that of the movable table a1, but is not limited thereto.

In this embodiment, the second position adjusting mechanism 441b is provided so as to be interposed between the movable table a1 and the tip portion attached to the movable table a1.

In this embodiment, the orientation adjusting mechanism 442 is further provided between the slide member b2 and the tip portion attached to the slide member b2.
The orientation adjusting mechanism 442 includes a rotating member 442a to which the distal end portion is fixed, and a support member 442b that rotatably supports the rotating member 442a.

In this embodiment, the rotating member 442a is, for example, a disk-shaped plate, and rotates while its outer peripheral surface contacts the inner peripheral surface of the supporting member 442b, thereby moving the test vehicle V forward and backward. It is configured so that it can be rotated by 45° in increments of 90° in total.
The rotating member 442a is fixed by an orientation fixing mechanism 442c such as a crank lever, for example.

In this embodiment, the support member 442b is the slide member b2. It is accommodated so as to be in contact with the inner peripheral surface.

An example of a method for adjusting the position or direction of the blower port 42 by the wind direction adjusting unit 44 will be described below.
The position of the blower port 42 can be adjusted by changing the position of the movable table a1 or the slide member b2 to which the tip of the blower pipe 43 is attached in the longitudinal direction of the test vehicle V.

The position of the movable table a1 is determined by loosening the screw of the first fixing mechanism a2, moving the movable table a1 along the rail 21, and tightening the screw of the first fixing mechanism a2 at a desired position. is changed by fixing the movable table a1 to the rail 21 by using
When the position of the movable table a1 is changed in this way, the positions of the second position adjusting mechanism 441b and the orientation adjusting mechanism 442 mounted on the movable table a1 are also changed accordingly.

The position of the slide member b2 is determined by loosening the screw of the second fixing mechanism b3 that fixes the slide member b2 to the rail b1 provided on the movable base a1, and then moving the slide member b2 to the position described above. The test vehicle V is slid in the longitudinal direction on the rail b1 of the movable table a1 to change. After moving the slide member b2 to a desired position, the screw of the second fixing mechanism b3 is tightened to fix the slide member b2 to the rail b1 of the movable base a1.
When the position of the slide member b2 is changed in this way, the position of the orientation adjustment mechanism 442 mounted on the slide member b2 is also changed accordingly.

The direction of the blower port 42 can be adjusted by the degree of rotation of the rotating member 442a to which the tip portion of the blower pipe 43 is fixed in the longitudinal direction of the test vehicle V. As shown in FIG.
In this embodiment, the degree of rotation of the rotating member 442a is determined after loosening the orientation fixing mechanism 442c that fixes the rotating member 442a so as not to rotate with respect to the slide member b2. It is changed by rotating the moving member 442a. When the direction of the blower port 42 reaches a desired angle, the direction fixing mechanism 442c is tightened to fix the rotating member 442a so as not to rotate with respect to the slide member b2.

By adjusting the position and direction of the air outlet 42 in this way, for example, the tire W1 of the wheel W, the wheel W2, the brake B (brake pad B1 and brake disk B2), the body of the test vehicle V and the The air from the air outlet 42 can be sent out toward a target location such as a wheel housing space W4 (tire house) formed between the wheels W.

FIG. 4 is a diagram showing an example of the positional relationship between the cooling portion and the air blowing port when wind is applied to the wheel housing space W4. Further, FIG. 5 is a diagram showing an example of the positional relationship between the cooling portion and the blower port when wind is applied to the brake pad or brake disc.

Further, regarding the position of the air blow port 42 in the longitudinal direction of the test vehicle V, for example, as shown in FIG. It is also possible to arrange the airflow from the oblique front direction of the test vehicle V by arranging it so that it becomes

The air volume control unit 45 has the function of the information processing circuit, and controls the air volume by controlling the number of revolutions of the fan 41, for example.
A method of controlling the air volume by the air volume control unit 45 will be described below with reference to FIG.

The air volume control unit 45 is, for example, a signal indicating a torque-related value from the torque sensor 31 or the dynamo control unit 3, a speed sensor 5 for detecting the vehicle speed of the test vehicle V or the rotational speed of the roller 11, or For example, the number of rotations of the fan 41 is controlled based on a signal from a detection unit such as the temperature sensor 6 that detects the temperature of the wheel W and the like.

When cooling the wheels W of the test vehicle V, the higher the vehicle speed of the test vehicle V and the rotational speed of the rollers 11, the more likely heat is generated due to the friction between the rollers 11 and the wheels W. Conceivable.
Therefore, if the air volume control unit 45 controls the air volume of the air blown out from the air blow port 42 based on the vehicle speed of the test vehicle V and the rotational speed of the roller 11, excessive cooling and Insufficient cooling can be prevented and the wheels W can be cooled more appropriately.
In addition, since the air volume control unit 45 controls the air volume to increase as the vehicle speed of the test vehicle V and the rotation speed of the roller 11 increase, the load caused by the wind from the side during running on the actual road is reduced. Reproducibility can also be improved.

The air volume control unit 45 may be controlled to increase the air volume as the temperature of the wheel W increases.
In this way, excessive cooling or insufficient cooling of the wheels W can be prevented, and the wheels W can be cooled more appropriately.

Further, depending on test conditions, it may be desirable to cool not only the wheels W but also the brakes B attached to the wheels W.
This is because the large friction between the brake B and the wheel W continues for a long time, especially when the downhill continues, and the brake B may be excessively heated.

In the present invention, since the wind is applied from the lateral direction of the test vehicle V, it is possible to target the brake pad B1 and the brake disc B2 that constitute the brake B to apply the wind. Therefore, it is possible to prevent the brake pad B1 and the brake disc B2 from being excessively heated.
In such a case, the air volume control unit 45 may control the air volume to increase as the vehicle speed of the specimen or the deceleration of the rotational speed of the roller 11 increases.

When there is a large amount of friction between the brake B and the wheel W, the brake B needs to be cooled. When the vehicle speed of the sample or the rotational speed of the roller 11 is decelerating, the need to cool the brake B is reduced.
Therefore, the air volume control unit 45 obtains in advance the deceleration of the vehicle speed of the test piece or the rotational speed of the roller 11 due to the engine brake B or the like, and the friction to the extent that cooling is not required, and the reduction is determined in advance. The brake B can be cooled more efficiently by increasing the air volume only when the speed exceeds this threshold value.

By the way, it is conceivable that the angle of the air outlet 42 with respect to the longitudinal direction of the test vehicle V also affects how the wind hits the wheels W, the wheel housing space W4, the brakes B, etc., and the cooling efficiency.
Therefore, the air volume control unit 45 is configured to control the air volume based on the signal from the wind direction sensor 7 that senses the air blow port 42 or the angle of the air blown from the air blow port 42 with respect to the longitudinal direction of the test vehicle V. You can do it.

According to the chassis dynamo device 100 configured in this manner, the following effects can be obtained.
The wind from the air blow port 42 is blown to the wheel W or the wheel housing space W4 from the lateral side of the wheel W, and the wind direction adjustment unit 44 for adjusting the position or direction of the air blow port 42 is provided. , the side of the tire W1, the wheel W2, the brake pad B1, the brake disc B2, etc., which could not be directly exposed to air in the past, can be directly blown.
As a result, the part of the test vehicle V to be cooled and the wind direction can be freely selected according to the purpose of the test.

Further, since the wind from the air blowing port 42 is blown to the wheel W or the wheel housing space W4 from the lateral direction of the wheel W, the air in the wheel housing space W4 can be circulated, and the wheel W can be The whole can be cooled more efficiently than before.

On the road, it is thought that not only the wind from the front but also the wind from the side will have an effect. Therefore, in the test that reproduces the running on the road indoors, the wind from the lateral direction of the test vehicle V can be reproduced, so it is thought that the test can be performed under conditions closer to the actual running conditions.

The tip portion of the blowing pipe 43 is shaped like a nozzle, and the diameter of the blowing port 42 formed at the tip portion is set to be as small as about 5 cm. However, it is possible to blow against the test vehicle V at a wind speed of about 200 km/h.

Since the movable table a1 of the wind direction adjusting unit 44 is mounted on the rail 21 originally provided in the chassis dynamo device 100 to adjust the position of the air blow port 42, the test of the air blow port 42 can be performed with a simple configuration. The position of the vehicle V in the longitudinal direction can be changed.
Since the rail 21 is sufficiently longer than the longitudinal length of the test vehicle V, the position of the air outlet 42 can be moved in the longitudinal direction of the test vehicle V in a range wider than the longitudinal length of the test vehicle V. It is possible to

Specifically, the air outlet is targeted at the tire portion W1 of the wheel W, the wheel portion W2, the brake pad B1 and the brake disk B2 attached to the wheel W, or the wheel housing space W4 that houses the wheel W. Wind from 42 can be applied. Also, the angle of the wind hitting each part can be freely adjusted.
In particular, if the wind from the air blowing port 42 hits the wheels W obliquely from the front, the running conditions on the actual road can be reproduced more faithfully.
In addition, since the wind can be applied to the contact surfaces of the wheels W, the wheels W can be cooled more efficiently.

Since the wind direction adjusting unit 44 includes the position adjusting mechanism 441 and the orientation adjusting mechanism 442, the position and orientation of the blowing port 42 can be changed more flexibly with simple operations.
Further, if the position and angle of the air blowing port 42 are only slightly changed, the air blowing port 42 can be easily adjusted by adjusting only the slide member b2 and the rotating member 442a individually without moving the movable table a1. can change its position and orientation.

Since the fan 41 and the blowing port 42 are connected by the blowing pipe 43, the installation location of the fan 41 can be freely selected.
More specifically, the fan 41 does not need to be arranged around the test vehicle V, and can be arranged, for example, in an underground pit, thereby saving space.

The present invention is not limited to the above embodiments.
For example, each cooling device 4 provided for each roller 11 provided in the chassis dynamo device is not limited to having one fan 41, and a plurality of cooling devices 4 may share the fan 41. However, one cooling device 4 may include a plurality of fans 41 .

Further, the cooling device 4 is not limited to having one air duct 43 , and the cooling device 4 may have a plurality of air ducts 43 . Even if one wheel W is provided with two or more air blowing ports 42, for example, an air blowing port 42 for blowing air to the brake pad B1, an air blowing port 42 for blowing air to the wheel housing space W4, and the like. good.

The diameter and shape of the blower port 42 can be appropriately changed according to the size of the fan 41, the purpose of the test, the cooling part, and the like.
The blower port 42 may be formed at the tip of the blower pipe 43, or if there is a space for placing the fan 41, the fan 41 arranged outside the protection fence 24 It may be formed directly on the housing.
The air outlet 42 may be arranged inside the protection fence 24 . Also, a chassis dynamo device without the protective fence 24 may be used.

The position adjustment mechanism 441 and the direction adjustment mechanism 442 of the wind direction adjustment unit 44 are not limited to those described above, and the direction adjustment mechanism 442 and the tip of the blow pipe 43 attached to the direction adjustment mechanism 442 The position adjusting mechanism 441 may be interposed between the parts.
The position adjusting mechanism 441 is not limited to the one having the first position adjusting mechanism 441a and the second position adjusting mechanism 441b. Only the position adjusting mechanism 441a may be provided.

In the above-described embodiment, the rail b1 is provided on the movable base a1 of the position adjustment mechanism 441, and the slide member b2 is slid. You may make it slide with respect to.
The orientation adjusting mechanism 442 may rotate so that the outer peripheral surface or the inner peripheral surface of the rotating member 442a contacts the outer peripheral surface or the inner peripheral surface of the supporting member 442b. An integrally formed shaft member and a shaft hole formed in the rotating member 442a may be provided.
Moreover, the shaft member and the shaft hole may be formed in either the slide member b2 or the rotating member 442a.

The vehicle fixing portion may be provided with the rail 21, and the pole 22 and the wire 23 may be other vehicle fixing members.

Regarding the control of the air volume, a table may be prepared in advance according to test conditions, and the air volume control section 45 may control the air volume according to the conditions recorded in this table.
Also, the user can manually set the air volume without depending on the air volume control unit 45 .
The air volume control unit 45 is not limited to controlling the number of revolutions of the fan 41 as described above, but it is provided in the blower pipe 43 and adjusts the opening of the valve that adjusts the flow rate of the air flowing through the blower pipe 43. Alternatively, the diameter of the blower port 42 or the like may be controlled.
In addition, various modifications and combinations of embodiments may be made without departing from the gist of the present invention.

According to the present invention, it is possible to freely select the parts to be cooled and the wind direction of the specimen according to the purpose of the test, and furthermore, it is possible to improve the cooling efficiency of each cooling part compared to the conventional art.

Claims (11)

A vehicle testing apparatus for testing a vehicle or a specimen that is a part thereof,
a rotating body on which the specimen is mounted;
a cooling device that blows air from the side of the rotating body toward at least a part of the test article in order to cool the test article placed on the rotating body;
The cooling device is
a blowing port for blowing air toward at least a part of the specimen from the side of the rotating body;
and a wind direction adjusting unit that adjusts the position or direction of the air blow port,
further comprising a vehicle fixing portion arranged on the side of the rotating body so as to extend in the longitudinal direction of the test piece and for fixing the test piece on the rotating body;
The vehicle testing apparatus , wherein the wind direction adjusting section is fixed to the vehicle fixing section . 2. The vehicle testing apparatus according to claim 1, wherein said wind direction adjusting section is configured to be movable in the front-rear direction of said specimen on the side of said rotating body. 3. The airflow direction adjusting part according to claim 1 or 2, wherein said airflow direction adjusting part is fixed to said vehicle fixing part so that the position of said blower port can be moved with respect to said test object along the direction in which said vehicle fixing part extends. Vehicle test equipment. 4. Any one of claims 1 to 3 , wherein the wind direction adjusting unit adjusts the position or direction of the air blow port so as to send air toward the wheel of the specimen or the wheel housing space that houses the wheel of the specimen. or the vehicle testing device according to claim 1. The vehicle testing apparatus according to any one of claims 1 to 4 , wherein the airflow direction adjusting section allows the air blow port to rotate in the longitudinal direction of the specimen. 6. The vehicle testing apparatus according to any one of claims 1 to 5 , further comprising an air volume control section that controls an air volume that is blown out from the air blow port. 7. The vehicle testing apparatus according to claim 6, wherein said air volume control unit controls said air volume based on the vehicle speed of said test piece, the rotational speed of said wheels, or the temperature of said wheels. 8. The vehicle testing apparatus according to claim 6 or 7 , wherein said air volume control unit controls said air volume based on deceleration of vehicle speed of said specimen or deceleration of rotational speed of said wheel. 9. The vehicle testing apparatus according to claim 8 , wherein said air volume control unit controls said air volume to increase when said deceleration is greater than or equal to a predetermined threshold. A rotating body on which a test object that is a vehicle or a part thereof is mounted, and a rotating body that extends in the front-rear direction of the test object and is arranged on the side of the rotating body to fix the test object on the rotating body. A cooling device for cooling at least a portion of a specimen to be tested by a vehicle testing apparatus comprising a vehicle fixed part of
an air blowing port disposed on the side of the rotating body for blowing air toward at least a part of the specimen placed on the rotating body;
and a wind direction adjusting unit that adjusts the position or direction of the air blow port,
A cooling device that is used by being fixed to the vehicle fixing portion . A cooling method for cooling at least part of a vehicle or a part of a vehicle placed on a rotating body, comprising:
In order to cool the specimen mounted on the rotating body on which the specimen is mounted, a cooling device is used that blows air from the side of the rotating body toward at least a part of the specimen. can be,
The cooling device
a blowing port for blowing air toward at least a part of the specimen from the side of the rotating body;
and a wind direction adjusting unit that adjusts the position or direction of the air blow port,
further comprising a vehicle fixing portion arranged on the side of the rotating body so as to extend in the longitudinal direction of the test piece and for fixing the test piece on the rotating body;
The cooling method , wherein the wind direction adjusting section is fixed to the vehicle fixing section .

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